JPH0457792B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a roll magazine for rolls of a supercalender, which roll magazine has two upright stands, each of which is arranged at each end of the roll. , having projecting support arms arranged one above the other in the longitudinal direction, each set of support arms at the same height being used for holding a roll and projecting in the axial direction at the end of the roll. Supporting the shaft neck is a roll magazine such that the rolls in the receiving position are located in a common vertical line.

BACKGROUND OF THE INVENTION Known roll magazines of this type hold rolls of supercalenders, in particular so-called "elastic" rolls, i.e. rolls with an elastic surface, for storage or after replacement of damaged rolls of supercalenders. Used for temporary storage.
In the supercalender, a Calunda crane is used which has a two-wire traction device for each roll axle neck to feed the rolls that need to be replaced into the roll magazine and vice versa. One roll change bushing is fixed to each lower end of the wire traction device,
This bush fits into each shaft neck from above and transports the rolls.
However, due to the large weight of the roll changing bush, its handling is dangerous and time consuming. In a roll magazine, a sprocket is attached to or removed from the shaft neck. The rolls of the roll magazine are driven via mounted sprockets so that the often damp coating of the rolls does not turn into a so-called moisture bag in the lowermost stage. Installing and removing sprockets still takes time.

Roll magazines are also known in which a set of support arms, each set on a roll, is even staged, so that the rolls of the roll magazine are arranged not on a common vertical plane, but on an inclined plane. . For the drive of the rolls of the roll magazine, each roll is provided with a friction wheel which is supported beside the roll and is tiltable about a horizontal axis; It is pressed against the metal part of the roll that is concentric with the surface. All friction wheels are therefore driven in common by one motor via a belt drive mechanism. This roll magazine takes up a considerable amount of space due to its sloping roll holding surface.

(Problems to be Solved by the Invention) An object of the present invention is to provide a roll magazine within the above range, which can be placed on the front wall of the roll opening side of a supercalender in a space-saving manner, and which also allows roll replacement. The purpose is to propose a roll magazine that is easy to use.

(Means and effects for solving the problem) This problem is solved according to the present invention so that each support arm
The solution is provided by having a support part movable by a motor drive along the support arm, the movement of the support part of each set of support arms being synchronized.

With this solution, the support on the open side can be moved from a common longitudinal surface into the receiving part of the roll and then sent back again to the holding position, and vice versa. Therefore, when the support part of the support arm is in the forward position, the roll moved within the roll magazine or the roll to be removed from the roll magazine can be moved through the calendar without being obstructed by the rolls above it. Access from above is possible by a two-wire or multi-wire rope traction system of a crane or electric traction system.

Advantageously, each support is approximately saddle-shaped so that it can accommodate a bearing pin or a bearing ring surrounding the bearing pin along its shape. Therefore, the roll taken out to the support part of the support arm set does not require special fasteners whether it is moving or stationary.

A further advantage is that each support arm is telescopingly removable and its support is mounted on the removable end of the support arm. As a result, a relatively short support arm can be formed, so that the front part of the roll magazine requires little space.

If there is some space in the front of the roll magazine, each support may be movably provided on its support arm as another form. In some cases,
It is also possible to form the support arm a little longer and to place the held rolls at a sufficient distance from the front of the roll common holding/storage surface in the roll magazine, which eliminates the slip-out end of the support arm, making the structure even better. It becomes easy.

Furthermore, it can be provided that the supports of each set of support arms can press the rolls held on them in the holding position against a friction wheel each having a fixed drive capacity. In this case, the supports have a dual function, firstly to displace the rolls held on them and secondly to press the rolls against the friction wheels. Therefore, no special drive device is required to generate the pressing force.

As a particularly advantageous feature, each friction wheel is provided with a pneumatic tire which, on the one hand, cushions the shocks on the friction wheel when holding the roll in question, and on the other hand, maintains a reliable drive. These friction wheels have a common drive in a known manner.

The supports can also have a common drive so that they can be connected individually.

This arrangement is less costly than a separate drive for each support.

In this case, one of the two supports of each set of support arms set on one roll can be provided with an electromagnetic coupling, which can be released by means of a limit switch at the end of the trajectory of the support.

(Embodiments and Effects of the Invention) The present invention and its development will be explained in more detail below using drawings of excellent embodiments.

FIG. 1 is a conceptual side view of a first embodiment of a roll magazine according to the present invention.

FIG. 2 is a partially enlarged view of the roll magazine shown in FIG. 1.

FIG. 3 shows the roll magazine of FIG. 1 on a further enlarged scale with an individual drive for the friction wheels cooperating with the rolls in the holding position in the roll magazine.

FIG. 4 shows a common drive for all supports of the roll magazine of FIGS. 1 and 2. FIG.

FIG. 5 is a conceptual diagram of an alternative drive arrangement for all friction wheels of the roll magazine of FIG. 1;

FIG. 6 is a conceptual side view of a second embodiment of the roll magazine of the present invention.

FIG. 7 is a partially enlarged view of the roll magazine shown in FIG. 6.

The roll magazine of FIGS. 1 to 3 has a frame with two parallel upright stands 1, although only one is visible in side view.

These stands are arranged against a building wall or an intermediate wall and are provided next to a supercalender (not shown) comprising a plurality of rolls 2 arranged longitudinally one above the other and having an elastic coating.

Each stand 1 is provided with a number of horizontally protruding support arms 3 corresponding to the number of rolls to be accommodated, six in this case, vertically one above the other, for each roll 2 to be accommodated. for,
A set of support arms 3 located in the same horizontal plane are provided to support an axle neck 4 projecting axially from the end of the roll 2. Each support arm 3 has a movable end 6 which can be telescopically extracted from a guide part 5 which is rigidly fixed to the stand, and above which a support part 7 is located near its free end. Fixed. The support 7 has a saddle-like shape with an upwardly open concave seat 8;
The radius of curvature of the concave seat matches the radius of curvature of the roll bearing ring so as to receive the bearing ring 9 which rests on the shaft neck 4 without any gaps. but,
The radius of curvature of the concave seat 8 is the same as the radius of curvature of the shaft neck 4, and it is also possible to directly receive the shaft neck 4 in the concave seat 8. Since the guide part 5 has a substantially U-shaped cross section and is open upward, the support part 7 is placed above the guide part 5 and moves to the receiving position 2b after coming out of the receiving/delivery position 2a. get something to do.

As a drive device for the horizontal movement of the support 7 between the roll transfer position 2a and the rear receiving position 2b, a separate drive with an electric motor 10 and a drive chain 11 is used, as shown in FIG. An apparatus is provided for a set of support arms for receiving rolls. Alternatively, it is also possible to provide a hydraulic cylinder in conventional or telescopic form or in the form of a cable cylinder. The guide part 5 is provided with a rotational or sliding guide 12 which is conceptually implied.

In the transfer position 2a, the rolls to be handled are simply moved from above by means of an indoor crane with two or more wires or a stationary electric traction device, as indicated by the arrow 13, to the roll located above it in the roll magazine. 2 can be carried out without being disturbed, and can likewise be installed on the support part 7 of a set of support arms.

In particular, as shown in FIG. 3, the roll 2, in the entry or retraction position 2b, is mounted in a fixed position on the stand by means of the roll diameter section 14 and rests against a friction wheel 15 having an air tube ring 16. Furthermore, each friction wheel 15 is connected to an individual drive 17 in the form of an electric motor.

The drive motor 10 (FIG. 2) is turned on and off by limit switches (not shown) at positions 2a and 2b.

FIG. 4 conceptually shows a modification of the drive section of the moving end section 6 or the support section 7. As shown in FIG. The variant consists of a joint drive or group drive of all moving ends 6. Instead of a separate drive motor 10, an electromagnetic coupling 18 is provided which is driven on the drive side by a single drive motor 22 via a sprocket 19, a chain 20 and a tensioning and steering wheel 21.

By switching on the electromagnetic coupling 18, only the moving end 6 corresponding to the desired storage stage of the roll magazine begins to move - with the correct power factor and operating behavior depending on the specifications of the electromagnetic coupling. In this case as well, the movement of the moving end 6 can be controlled by turning on and off the electromagnetic coupling 18 by means of a limit switch at position 2a or 2b.

The friction wheel 15 can also be provided with a joint drive according to FIG. 5 instead of an individual drive. In this form, each friction wheel 15
has one sprocket 23, and every sprocket 23 has only one drive motor 24.
It is driven via a chain 25 which passes over the tension and deflection wheel 16 via a chain 25. The roll magazine shown in Figures 6 and 7 is
The roll magazine of FIGS. 1 to 3 differs only in that the support arm 3' is not telescopic, but the support arm 3' is the same as the extended support arm 3 as in FIGS. 1 to 3. The support part 7 on the support arm 3' is mounted so as to be movable in its longitudinal direction. In the embodiments of FIGS. 6 and 7 as well, a common drive or group drive as shown in FIGS. 4 and 5 is used for the support group 7 or the friction wheel group 15. be able to.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the roll magazine according to the first embodiment of the present invention, Fig. 2 is a partially enlarged side view of the roll magazine shown in Fig. 1, and Fig. 3 is a side view schematically showing the roll magazine of the first embodiment of the present invention. Another enlarged side view of the roll magazine of FIG. 1 with individual drives having drive wheels on the roll magazine wheels, FIG. 4 showing a common drive for all storage parts of the roll magazine of FIGS. 1 and 2. FIG. 5 is a schematic diagram of the roll magazine of FIG. 1 with another drive common to all friction wheels; FIG. 6 is a schematic diagram of the roll magazine of FIG. FIG. 7 is a partially enlarged side view of the roll magazine shown in FIG. 6. 1... Upright stand, 2... Elastic roll, 2a
...Delivery position, 2b...Reception position, 3, 3'...
... Support arm, 4 ... Roll shaft neck, 5 ... Guide part, 6 ... Moving end part, 7 ... Support part, 8 ... Concave seat, 9 ... Roll bearing ring, 10 ... Motor,
11... Drive chain, 12... Rotating or sliding guide, 13... Lifting direction arrow, 14... Roll small diameter section, 15... Friction wheel, 16... Air tube wheel, 17... Individual drive device, 18 ...Electromagnetic coupling, 19...Sprocket, 20...
Chain, 21...Direction wheel, 22...Drive motor, 23...Sprocket, 24...Single drive motor, 25...Chain, 26...Tension and direction change wheel.

Claims (1)

[Scope of Claims] 1. There are two upright stands placed respectively at opposite ends of the roll, each upright stand having protruding support arms placed one above the other in the vertical direction, with the support arms being at the same height. Each set has a retaining portion that serves to retain one roll by supporting a shaft neck projecting axially from the end of the roll, the rolls being arranged in a common vertical plane in a receiving position. In the roll magazine of the rolls of the supercalender, each support arm 3; 3' has a support part 7 which can be moved by a motor along the support arm, and the support part 7 of each support arm set 3; 3'
The movements of the supports 7 of each set of support arms 3; 3' are synchronized so that the supports 7 of each set of support arms 3; A roll magazine characterized by being pressed against a wheel 15. 2. A roll magazine according to claim 1, characterized in that each support 7 is substantially saddle-shaped for proper reception of the roll neck 4 or of the bearing ring 9 surrounding this neck. . 3. Claim 2, characterized in that each support arm 3 is telescopically removable and that its support part 7 is mounted on the removable end 6 of the support arm 3. Roll magazine as described in section. 4. Each support 7 is movably mounted on its support arm 3',
A roll magazine according to claim 2. 5. Roll magazine according to one of the claims 1 to 4, characterized in that each friction roll 15 is equipped with one air tube ring 16. 6 Friction wheel 15 common drive device 23-26
Claim 1 characterized in that it has
A roll magazine as described in one of paragraphs 1 to 5. 7. According to one of the claims 1 to 7, the supports 7 are characterized in that they have a common drive 18-22, to which the supports can be connected individually. Roll magazine listed. 8 Each support arm set 3 set on roll 2;
An electromagnetic coupling 1 is attached to one of both support parts 7 of 3'.
8 is set, and this electromagnetic coupling is adapted to be released at the end of the movement trajectory of the support part 7 by means of a limit switch.